<template>
  <div class="icons">
    <swiper :options="swiperOption" >
     <swiper-slide v-for="(page,index) of pages" :key="index" >
      <div class="icon" v-for="item of page" :key="item.id">
          <div class="icon-img">
              <img class="icon-img-content" :src="item.imgUrl">
          </div>
          <p class="icon-desc">{{item.desc}}</p>
      </div>
     </swiper-slide>
    </swiper>
  </div>
</template>

<script>
export default {
name:'HomeIcons',
props:{
    list:Array
},
 data () {
    return {
      swiperOption: {
        autoplay: false
      }
    }
  },
computed:{
    pages(){
        // 算法逻辑 向下取整 前八个数据计算结果均为0，push到pages数组的第0位
       const pages=[]
       this.list.forEach((item,index)=>{
           const page =Math.floor(index/8)
           if(!pages[page]) pages[page]=[]
           pages[page].push(item)
       })
        return pages
    }
}
}   
</script>

<style lang="stylus" scoped>
 @import '~styles/varibles.styl'
 @import '~styles/mixins.styl'
  .icons >>> .swiper-container
    height: 0
    padding-bottom: 50%
  .icons
    margin-top: .1rem
    .icon
      position: relative
      overflow: hidden
      float: left
      width: 25%
      height: 0
      padding-bottom: 25%
      .icon-img
        position: absolute
        top: 0
        left: 0
        right: 0
        bottom: .44rem
        box-sizing: border-box
        padding: .1rem
        .icon-img-content
          display: block
          margin: 0 auto
          height: 100%
      .icon-desc
        position: absolute
        left: 0
        right: 0
        bottom: 0
        height: .44rem
        line-height: .44rem
        text-align: center
        color: $darkTextColor
        ellipsis()
</style>